Malicious PDF — malware analysis report

Static analysis result for SHA-256 e196901a2fd37179…

MALICIOUS

PDF

86.3 KB Created: 2021-07-02 06:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 2dd93f5bde01a943c7c603755e3e75e0 SHA-1: eb4390accc40a49a9b0331f91992c3987f52dcd7 SHA-256: e196901a2fd3717901525d28a3d1f08e6099c08595826060937001fc6e7b5e5b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://drafthe.ru/uplcv?utm_term=learning+styles+and+preferences PDF link annotation
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/gi82gnb42ngfnsogd7p7dke470/63752117286.pdfIn PDF document text
    • http://webhenevents.com/clients/868374/File/jupetelesobuwonape.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/dc34ce5041e98ec7f6ee5ea379f0bae3/73832242802.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f168ec415---rigabidigefizir.pdfIn PDF document text
    • http://caramelitos.sk/files/1231541675.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/19ddf6309eb4648a6a22def74eb3c10a/kolotoduvukakotewegama.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/81a5674c59113c300658f6db8e75ac2c/lufimokajinepeso.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bca0ed9e4e5---59668841500.pdfIn PDF document text
    • http://18554080.com/userfiles/file/95492158205.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ec0c6b961---fowevibudafivoloxuletos.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081debb12652---4978593575.pdfIn PDF document text
    • http://poiskvod.ru/images/file/titatowamokakizunedur.pdfIn PDF document text
    • https://olivier-daulte.com/ckfinder/userfiles/files/dikapope.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607761e8b302a---84627447939.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1609cff62c527f---67033407486.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/23502750522.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d9e0c05d3---wixaxipepoto.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/60625669165.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160919f69a9d52---85549025737.pdfIn PDF document text
    • https://fidelishospice.com/ckfinder/userfiles/files/lepiwebugivurarete.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/difetisezunimaku.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/25032455019.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab12770a98---lazoxiz.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF054 16720 bytes
SHA-256: ee92053eb0f4ac60b6b5f95e58a6405c5c952e72ab02791a6258f5c558011c0d
font_01_sfnt_off00011b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B7E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13395 10744 bytes
SHA-256: 95249777c1d404b7c91e95e36139cd97a7657e3f13848e7a60effe2e06bd3b11

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